Improvement in rolling iron



W. D. BYNON & W. LLOYD. Rolling Iron.

No. 220,818. Patented 0ct.21,18 79.

UNITED STATES PATENT OEEIoE.

WILLIAM D. EYNON AND WILLIAM LLOYD, OF PHILADELPHIA, PA.

IMPROVEMENT IN ROLLING IRON.

Specification forming part of Letters Patent No. 220,818, dated October21, 1879; application filed March 10, 1879.

To all whom it may concern:

Be it known that we, WILLIAM D. EYNoN aHd WILLIAM LLOYD, both of thecity and county of Philadelphia, and State of Pennsylvania, haveinvented a new and useful Improvement in Rolling Iron, which improvementis fully set forth in the following specification and accompanyingdrawings, in which- Figures 1 and 2 are views of opposite sides of rollsembodying our invention. Fig. 3 is a vertical section in line w 00, Fig.2.

Similar letters of reference indicate corresponding parts in the severalfigures.

Ourinvention relates to metal-working rolls, which are provided withguideways extending from the lower grooves to the upper grooves thereof.

The said invention consists of certain improvements in mechanism fortransferring blanks or bars through said guidcways from groove togroove.

It also consists in constructing said grooves so that the bars may bepassed from elliptical grooves to angular ones without turning them.

Our invention is hereinafter described and shown as applied to a set ofthree-high rolls arranged in the ordinary manner. To the bearings orattachments of the said rolls there is secured a frame, B, which extendsupward, incline from the lower part of the set of rolls to the upperpart thereof. Said frame supports at upper and lower ends tubular guides(3 O, the guide Oleading to the groove between the top and middle rolls,and the guide 0 leading from an adjacent groove between the middle andbottom rolls.

To the frame B there is secured a block, D, having a curved outer face,as at a, and occupyingaposition between the outer ends of the tubularguides O O. Adjacent to the block D is mounted a roller, E, and diagonalthereto a roller, E. At the outer end of the guide 0, diagonal to theblock D, is mounted a roller, E, so that a passage is left betweentheblock D and roller E", and the roller E and roller E.

As the iron is passed between the grooves of the middle and bottom rolls.it enters the guide 0, and is directed by the'roller E upward aroundthe face of the block D, and

reaching the roller E is guided by the roller- E into the guide 0, andthus to the groove of the middle and upper rolls, so that the pass fromone groove to another is automatic.

Rollers E E also act ,as stops or guards to prevent the escape of metalbars from the guides. It will he noticed that the roller E is sodisposed that it directs the iron around the roller E.

It is evident that this guiding, passing, or conveying mechanism may beapplied to the rolls to operate with the several grooves throughout theextent of the rolls, andthe rolls may be arranged in pairs side by side,and a conveyer communicate from one pair'to the other. The shape ofthese rolls is such that the grooves formed by their contact are in somecases elliptical, in others quadrangular.

The quadrangular grooves preferably alternate with the ellipticalgrooves, but any convenient arrangement may be adopted. The former aredesignated 01 in the drawings, and the latter are designated b.

In operation, a bar of metal is first passed through a lower ellipticalgroove between the mid dle and bottom rolls then through anupperquadrangular groove between the middle and upper rolls, then to alower elliptical groove again, and so on. Of course this succession maybe reversed; but it is important that pressure in elliptical groovesshould alternate with pressure in quadrangular grooves to secure athorough kneading of the metal.

It is evident a bar pressed into elliptical shape in crosssection by anelliptical groove can enter one of the quadrangular grooves only whenits longer diameter coincides with one of the diagonal lines of saidquadrangular grooves. This line must be the line which terminates in theangles that extend into the bodies of the rolls, as otherwise thegreatest pressure on the metal would be brought to hear at thejoint-angles, whereby small quantities of metal would be forced out ofthe grooveslaterallyandthe workingofthe rollsimpedcd. If, however, thediagonal line referred to as necessarily receiving or coinciding withthe longer diameter of the elliptical bar be not parallel to the longerdiameter of the groove which that bar has just left, it becomesnecessary to turn the bar in transz'tu. This involves considerable laborby hand or combination with block D and suitable stops for preventingthe escape of metal.

3.2 In combination with suitable guides, the rolls producing jointlyelliptical grooves b and angular grooves d, the longer diameter of eachelliptical groove being parallel to the line of greatest pressure of thesucceeding angular groove, so that the bar may be passed from one to theother without turning it.

W. D. EYNON. 7 WILLIAM LLOYD.

Witnesses:

JOHN A. Wrannasnnm, II. E. GARSED.

